//
//  WBNetworkManager+Extension.swift
//  微博
//
//  Created by dong on 2018/2/12.
//  Copyright © 2018年 dong. All rights reserved.
//

import Foundation

//Mark： - 封装新浪微博的网络请求方法
extension WBNetworkManager{
    
    ///加载微博数据字典数组
    ///
    /// - parameter since_id:返回ID比since_id大的微博（即比since_id时间晚的微博）,默认为0
    /// - parameter max_id:返回ID比max_id小的微博（即比since_id时间早的微博）,默认为0
    /// - parameter completion: 完成回调[lisat: 微博字典数组／是否成功]
    func statusList(since_id: Int64 = 0, max_id: Int64 = 0,completion: @escaping (_ list:[[String:Any]]?, _ isSuccess: Bool)->()){
        let urlString = "https://api.weibo.com/2/statuses/home_timeline.json"

        //swift中 Int可以转换成AnyObject，但Int64不行
        let params = ["since_id": "\(since_id)","max_id": "\(max_id > 0 ? max_id - 1 : 0)"]
        
        tokenRequest(UrlString: urlString, parameters: params as [String : AnyObject] ){
            (json, isSuccess) in
            
            //从json中获取statuses字典数组
            //如果 as？失败，result=nil
            let result = json?["statuses"] as? [[String: AnyObject]]
            
            completion(result,isSuccess)
        }

    }
    
    
    ///返回微博的未读数量 - 定时刷新， 不需要提示是否失败
    func unreadCount(completion:@escaping (_ count: Int)->()){
        
        guard let uid = userAccount.uid else{
            
            return
        }
        
        let urlString = "https://rm.api.weibo.com/2/remind/unread_count.json"
        
        let params = ["uid": uid]
        
        tokenRequest(UrlString: urlString, parameters: params as [String : AnyObject]){ (json,isSuccess) in
            
            let dict = json as? [String: AnyObject]
            let count = dict?["status"] as? Int
            
            completion(count ?? 0)
        }
    }
}

// MARK: - 用户信息
extension WBNetworkManager {
    
    /// 加载用户信息 - 用户登陆后立即执行
    func loadUserInfo(completion: @escaping (_ dict: [String: AnyObject])->()) {
        
        guard let uid = userAccount.uid else{
            
            return
        }
        
        let urlString = "https://api.weibo.com/2/users/show.json"
        
        let params = ["uid": uid]
        
        // 发起网络请求
        tokenRequest(UrlString: urlString, parameters: params as [String : AnyObject]) { (json, isSuccess) in
            print(json)
            
            // 完成回调
            completion((json as? [String: AnyObject]) ?? [:])
        }
    }
}

// MARK - OAuth相关方法
extension WBNetworkManager {
    
    //加载 AccessToken
    // 提问：网络请求异步到底返回什么？ - 需要返回什么
    /// 加载 AccessToken
    ///
    /// - Parameters:
    ///   - code: 授权码
    ///   - completion: 完成回调[是否成功]
    func loadAccessToken(code: String, completion: @escaping (_ isSuccess: Bool)->()){
        
        let urlString = "https://api.weibo.com/oauth2/access_token"
        
        let params = ["client_id": WBAppKey,
                      "client_secret": WBAppSecret,
                      "grant_type": "authorization_code",
                      "code": code,
                      "redirect_uri": WBredirectURI]
        
        //发起网络请求
        request(method: .POST, UrlString: urlString, parameters: params as [String : AnyObject]){(json, isSuccess) in
            
            print(json as Any)
            
            //如果请求失败，对用户账户数据不会有任何影响
            // 直接用字典设置 userAccount 的属性
            self.userAccount.yy_modelSet(with: (json as? [String : AnyObject]) ?? [:])
            
            print(self.userAccount)
            
            
            //加载用户当前信息
            self.loadUserInfo(completion: { (dict) in
            
                // 使用用户信息字典设置用户账户信息（昵称和头像地址）
                self.userAccount.yy_modelSet(with: dict)
            
                //保存模型
                self.userAccount.saveAccount()

            
                print(self.userAccount)
            
                //用户信息加载完成再，完成回调
                completion(isSuccess)
                            
            })
            
        }
    }
}
